qse/ase/macros.h

76 lines
2.1 KiB
C

/*
* $Id: macros.h,v 1.21 2005-04-02 15:36:02 bacon Exp $
*/
#ifndef _XP_MACROS_H_
#define _XP_MACROS_H_
#include <xp/types.h>
#ifdef __cplusplus
#define XP_NULL ((xp_uint_t)0)
#else
#define XP_NULL ((void*)0)
#endif
#define XP_EOF ((xp_cint_t)-1)
#define xp_sizeof(n) (sizeof(n))
#define xp_countof(n) (sizeof(n) / sizeof(n[0]))
#if defined(_WIN32) && defined(XP_CHAR_IS_WCHAR)
#define xp_main wmain
#elif defined(XP_CHAR_IS_MCHAR)
#define xp_main main
#endif
#define XP_TYPE_IS_SIGNED(type) (((type)0) > ((type)-1))
#define XP_TYPE_IS_UNSIGNED(type) (((type)0) < ((type)-1))
#define XP_TYPE_MAX(type) \
((XP_TYPE_IS_SIGNED(type)? (type)~((type)1 << (xp_sizeof(type) * 8 - 1)): (type)(~(type)0)))
#define XP_TYPE_MIN(type) \
((XP_TYPE_IS_SIGNED(type)? (type)((type)1 << (xp_sizeof(type) * 8 - 1)): (type)0))
#define XP_NUM_IS_POWOF2(x) (((x) & ((x) - 1)) == 0)
#define XP_LOOP_CONTINUE(id) goto __loop_ ## id ## _begin__;
#define XP_LOOP_BREAK(id) goto __loop_ ## id ## _end__;
#define XP_LOOP_BEGIN(id) __loop_ ## id ## _begin__: {
#define XP_LOOP_END(id) XP_LOOP_CONTINUE(id) } __loop_ ## id ## _end__:;
#define XP_REPEAT(n,blk) \
do { \
xp_size_t __xp_repeat_x1 = (xp_size_t)(n); \
xp_size_t __xp_repeat_x2 = __xp_repeat_x1 >> 4; \
__xp_repeat_x1 &= 15; \
while (__xp_repeat_x1-- > 0) { blk; } \
while (__xp_repeat_x2-- > 0) { \
blk; blk; blk; blk; blk; blk; blk; blk; \
blk; blk; blk; blk; blk; blk; blk; blk; \
} \
} while (0);
#define XP_QUOTE(val) __XP_QUOTE(val)
#define __XP_QUOTE(val) #val
#define XP_MCHAR(ch) ((xp_mchar_t)ch)
#define XP_MTEXT(txt) ((const xp_mchar_t*)txt)
/* TODO: if the compiler doesn't have the built-in wchar_t support
* XP_WCHAR & XP_WTEXT must be defined differently.
#define XP_WCHAR(ch) ((xp_wchar_t)ch)
#define XP_WTEXT(txt) don't know yet... may have to call a function?
*/
#define XP_WCHAR(ch) ((xp_wchar_t)L##ch)
#define XP_WTEXT(txt) ((const xp_wchar_t*)L##txt)
#if defined(XP_CHAR_IS_MCHAR)
#define XP_CHAR(ch) XP_MCHAR(ch)
#define XP_TEXT(txt) XP_MTEXT(txt)
#else
#define XP_CHAR(ch) XP_WCHAR(ch)
#define XP_TEXT(txt) XP_WTEXT(txt)
#endif
#endif